The Fourth Man is a 1983 British horror film directed by Paul Verhoeven and starring Jeroen Krabbe, Renee Soutendijk, and Thom Hoffman. The film follows the story of a man named Seth (played by Krabbe) who is invited to a dinner party with three other people, only to find out that they are all being targeted by a mysterious killer. Seth must use his wits to survive and uncover the identity of the fourth man.